From: Charles Forsyth <charles.forsyth@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] 6a bug
Date: Wed, 16 Nov 2011 14:35:49 -0800 [thread overview]
Message-ID: <CAOw7k5hJz=F13tUpq7mU3gSnSWr7H=y4rKCN-OUO-FOavBGygA@mail.gmail.com> (raw)
In-Reply-To: <2dce475f96630e9cf6e633e2f74a2ffc@coraid.com>
AX is the wrong register. REGARG is BP. actually, it's "RARG" in 6a, in case it
changes, although that seems less likely now.
On 16 November 2011 14:25, erik quanstrom <quanstro@labs.coraid.com> wrote:
> i plan to look at this when i get home, but it appears that 6a
> doesn't like big numbers. demo script follows
>
> - erik
> -------
> ; cat >a.s <<'EOF'
> #define KZERO (0xffffff0000000000ull)
>
> TEXT bignumber(SB), 1, $0
> ADDQ $KZERO, AX
> RET
> EOF
> ; cat >ac.c<<EOF
> #include <u.h>
> #include <libc.h>
>
> extern uvlong bignumber(uvlong);
>
> void
> main(void)
> {
> print("%llux\n", bignumber(0));
> exits("");
> }
> EOF
> ; 6a a.s; 6c ac.c; 6l a.6 ac.6
>
>
next prev parent reply other threads:[~2011-11-16 22:35 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-16 22:25 erik quanstrom
2011-11-16 22:35 ` Charles Forsyth [this message]
2011-11-16 22:36 ` Charles Forsyth
2011-11-16 22:50 ` Russ Cox
2011-11-16 23:27 ` Charles Forsyth
[not found] ` <CAOw7k5hJz=F13tUpq7mU3gSnSWr7H=y4rKCN-OUO-FOavBGygA@mail.gmail.c>
2011-11-17 0:50 ` erik quanstrom
2011-11-17 16:07 ` Russ Cox
2011-11-17 16:13 ` Charles Forsyth
[not found] ` <CADSkJJU2s1r8Qi=F9eT=+i2mCatxB+c_70teMBkQ3ToOsazGDA@mail.gmail.c>
2011-11-17 16:15 ` erik quanstrom
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